Earth & Space Vocab Flashcard

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the Sun, has a glowing tail due to the sublimation of its ice.

Front

What is the heliocentric theory?

Back

The heliocentric theory is the model of the solar system that places the Sun at the center, with planets, including Earth, orbiting around it.

Front

What is the geocentric theory?

Back

The geocentric theory is the model of the solar system that places Earth at the center, with the Sun and other celestial bodies orbiting around it.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, with strength depending on their masses and the distance between them.

Front

Which celestial body has the strongest gravity?

Back

The Sun has the strongest gravity among the listed celestial bodies.

Front

What is a lunar eclipse?

Back

A lunar eclipse occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to cover the Moon.

Front

What is the difference between a solar eclipse and a lunar eclipse?

Back

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking the Sun's light, while a lunar eclipse occurs when the Earth blocks sunlight from reaching the Moon.

Front

What is the role of data in scientific theories?

Back

Scientific theories are based on large amounts of data collected over time, which helps to support or refute the theories.

Front

What is the significance of the tail of a comet?

Back

The tail of a comet glows due to the Sun's heat causing the comet's ice to vaporize, creating a visible trail of gas and dust.

Front

What are planets?

Back

Planets are large celestial bodies that orbit a star, such as the Sun, and do not produce their own light.